Programmable acousto-optic warning system

Abstract

The utility model relates to a programmable acousto-optic warning system, comprising a power supply circuit, an MCU control circuit, an audio power amplifier circuit, an RS485 communication circuit, an RGB drive circuit and a plurality of LED lamp beads, the power supply circuit is connected with the MCU control circuit, the MCU control circuit is respectively connected with the audio power amplifier circuit, the RS485 communication circuit and the RGB drive circuit, the plurality of LED lamp beads are in cascade connection, and the plurality of LED lamp beads are in cascade connection. And the output end of the RGB driving circuit is connected with the LED lamp beads. According to the programmable acousto-optic warning system provided by the utility model, the high-performance microprocessor GD32F303CCT6 is adopted, so that quick response and stable operation of the system are ensured. The power supply management design is enhanced, multiple protection mechanisms are arranged, and long-term stable operation is guaranteed. An efficient LED driving scheme is combined with an audio amplification technology, and excellent audio-visual experience is provided.

Description

Technical Field

[0001] This utility model relates to the field of industrial equipment, and more particularly to the field of tower light systems, specifically a programmable audible and visual alarm system. Background Technology

[0002] In the field of industrial automation, signal beacons, as important visual indication devices, are widely used in various production environments and security monitoring scenarios. Traditional signal beacon systems typically use fixed colors and patterns, unable to be flexibly adjusted according to actual application scenarios. Furthermore, the brightness and frequency adjustment functions of traditional signal beacons are relatively simple, offering limited signal options. Regarding audio alarms, traditional systems usually only provide a limited number of audio signals, failing to meet the application needs of specific scenarios. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a programmable sound and light alarm system that is fast-responding, stable in operation, and widely applicable.

[0004] To achieve the above objectives, the programmable audible and visual alarm system of this utility model is as follows:

[0005] The main features of this programmable audible and visual alarm system are that the system includes a power supply circuit, an MCU control circuit, an audio amplifier circuit, an RS485 communication circuit, and an RGB driver circuit. The output of the power supply circuit is connected to the MCU control circuit, the audio amplifier circuit, the RS485 communication circuit, and the RGB driver circuit, respectively. The output of the MCU control circuit is connected to the audio amplifier circuit and the RGB driver circuit, respectively. The MCU control circuit is also connected to the RS485 communication circuit. The RGB driver circuit includes multiple cascaded LED beads.

[0006] Preferably, the power supply circuit includes a first XL1509 power chip, a second XL1509 power chip, and a voltage conversion chip LM117. The input terminal of the first XL1509 power chip is connected to a power input terminal, the input terminal of the second XL1509 power chip is connected to the output terminal of the first XL1509 power chip, and the input terminal of the voltage conversion chip LM117 is connected to the output terminal of the second XL1509 power chip.

[0007] Preferably, the power supply circuit further includes a seventh TVS diode D7 and a first Schottky diode D1. One end of the seventh TVS diode D7 is connected to the power input terminal, and the other end is grounded. The anode of the first Schottky diode is connected to the power input terminal, and the cathode of the first Schottky diode is connected to the input terminal of the first XL1509 power chip.

[0008] Preferably, the MCU control circuit includes a microcontroller, which includes an audio signal output terminal, an RGB control signal output terminal, and a communication protocol port. The audio signal output terminal is connected to an audio power amplifier circuit, the RGB control signal output terminal is connected to an RGB driver circuit, and the communication protocol port is connected to an RS485 communication circuit. The microcontroller is a GD32F103C8T6 microcontroller.

[0009] Preferably, the audio power amplifier circuit includes a first transistor Q1, a ninth Schottky diode D9, and a transformer. The base of the first transistor Q1 is connected to the audio signal output terminal of the microcontroller in the MCU control circuit. The emitter of the first transistor Q1 is grounded. The collector of the first transistor Q1 is connected to the anode of the ninth Schottky diode D9. The cathode of the ninth Schottky diode D9 is connected to the power supply circuit. Port 1 of the transformer is connected to the collector of the first transistor Q1, and port 2 of the transformer is connected to the power supply circuit.

[0010] Preferably, the RS485 communication circuit includes a communication chip and a first TVS diode TV1. The input terminal of the communication chip is connected to the MCU control circuit, and the communication chip is also connected to the power supply circuit. The output terminal of the communication chip is connected to the first TVS diode TV1. The communication chip is an SP3485EN chip.

[0011] Preferably, the RGB driving circuit further includes a level conversion chip U6, the input terminal of which is connected to the MCU control circuit, the level conversion chip U6 is also connected to the power supply circuit, and the output terminal of which is connected to the LED beads.

[0012] The programmable audible and visual alarm system of this invention employs a high-performance GD32F303CCT6 microprocessor, ensuring rapid system response and stable operation. This invention features enhanced power management design and multiple protection mechanisms to guarantee long-term stable operation. The efficient LED driver solution combined with audio amplification technology provides an exceptional audio-visual experience. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the power supply circuit of the programmable sound and light alarm system of this utility model.

[0014] Figure 2 This is a schematic diagram of the MCU control circuit of the programmable sound and light alarm system of this utility model.

[0015] Figure 3This is a schematic diagram of the audio power amplifier circuit of the programmable sound and light alarm system of this utility model.

[0016] Figure 4 This is a schematic diagram of the RS485 communication circuit of the programmable sound and light alarm system of this utility model.

[0017] Figure 5 This is a schematic diagram of the RGB driving circuit of the programmable sound and light alarm system of this utility model.

[0018] Figure 6 This is a schematic diagram of the cascaded LED beads of the programmable sound and light alarm system of this utility model.

[0019] Figure 7 This is a schematic diagram showing the structural connections of each circuit in the programmable sound and light alarm system of this utility model. Detailed Implementation

[0020] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0021] The programmable sound and light alarm system of this utility model includes a power supply circuit, an MCU control circuit, an audio power amplifier circuit, an RS485 communication circuit, and an RGB driver circuit. The output terminal of the power supply circuit is connected to the MCU control circuit, the audio power amplifier circuit, the RS485 communication circuit, and the RGB driver circuit, respectively. The output terminal of the MCU control circuit is connected to the audio power amplifier circuit and the RGB driver circuit, respectively. The MCU control circuit is also connected to the RS485 communication circuit. The RGB driver circuit includes multiple cascaded LED beads.

[0022] In a preferred embodiment of this utility model, the power supply circuit includes a first XL1509 power chip, a second XL1509 power chip, and a voltage conversion chip LM117. The input terminal of the first XL1509 power chip is connected to the power input terminal, the input terminal of the second XL1509 power chip is connected to the output terminal of the first XL1509 power chip, and the input terminal of the voltage conversion chip LM117 is connected to the output terminal of the second XL1509 power chip.

[0023] In a preferred embodiment of the present invention, the power supply circuit further includes a seventh TVS diode D7 and a first Schottky diode D1. One end of the seventh TVS diode D7 is connected to the power input terminal, and the other end is grounded. The anode of the first Schottky diode is connected to the power input terminal, and the cathode of the first Schottky diode is connected to the input terminal of the first XL1509 power chip.

[0024] In a preferred embodiment of this utility model, the MCU control circuit includes a microcontroller, which includes an audio signal output terminal, an RGB control signal output terminal, and a communication protocol port. The audio signal output terminal is connected to an audio power amplifier circuit, the RGB control signal output terminal is connected to an RGB driver circuit, and the communication protocol port is connected to an RS485 communication circuit. The microcontroller is a GD32F103C8T6 microcontroller.

[0025] In a preferred embodiment of this utility model, the audio power amplifier circuit includes a first transistor Q1, a ninth Schottky diode D9, and a transformer. The base of the first transistor Q1 is connected to the audio signal output terminal of the microcontroller in the MCU control circuit. The emitter of the first transistor Q1 is grounded. The collector of the first transistor Q1 is connected to the anode of the ninth Schottky diode D9. The cathode of the ninth Schottky diode D9 is connected to the power supply circuit. Port 1 of the transformer is connected to the collector of the first transistor Q1, and port 2 of the transformer is connected to the power supply circuit.

[0026] In a preferred embodiment of this utility model, the RS485 communication circuit includes a communication chip and a first TVS diode TV1. The input terminal of the communication chip is connected to the MCU control circuit, and the communication chip is also connected to the power supply circuit. The output terminal of the communication chip is connected to the first TVS diode TV1. The communication chip is an SP3485EN chip.

[0027] In a preferred embodiment of this utility model, the RGB driving circuit further includes a level conversion chip U6. The input terminal of the level conversion chip U6 is connected to the MCU control circuit, the level conversion chip U6 is also connected to the power supply circuit, and the output terminal of the level conversion chip U6 is connected to the LED beads.

[0028] In a specific embodiment of this utility model, an innovative programmable intelligent tower light system is provided, designed specifically for users seeking personalized and intelligent signal display solutions. This system integrates highly flexible programmable control with powerful external communication capabilities.

[0029] The hardware component of this utility model has the following structure:

[0030] 1. Power supply circuit

[0031] The power supply system uses dual XL1509 voltage regulators to output 12V and 5V respectively, while the LM117 is specifically used to generate the 3.3V core logic level, ensuring stable power supply to all circuit components. The power circuit uses two XL1509 power chips for voltage conversion to obtain 12V and 5V. The 3.3V is obtained by conversion using the LM117.

[0032] Considering the overall circuit's low power consumption and cost, reverse polarity protection uses an SS38 diode, and surge protection is designed with two levels of protection, using a 30V / TVS diode. The resettable fuse is placed after the TVS diode. A filter capacitor is added before the common-mode inductor to better eliminate interference.

[0033] For circuit protection design, an SS38 Schottky diode is deployed at the power input to prevent damage caused by reverse power connection. To address inrush currents that may be introduced by lightning strikes or grid fluctuations, the system adopts a two-stage protection strategy, integrating a 30V transient voltage suppressor diode (TVS diode) to effectively absorb and clamp overvoltage spikes, protecting subsequent circuits from impact.

[0034] 2. MCU control circuit

[0035] The MCU uses a GD32F103C8T6 microcontroller, whose main functions are to output audio signals and RGB control signals. It is responsible for generating precise RGB LED control signals and speaker drive signals, and supports the standard Modbus RTU communication protocol for external devices.

[0036] 3. Audio power amplifier circuit

[0037] The audio power amplifier circuit uses a 2N6039 transistor and an STPS2150 in conjunction with an STC03005 transformer to couple and amplify the audio output, forming an audio coupling and amplification scheme that ensures high-quality amplification and output of the audio signal.

[0038] 4. RS485 communication circuit

[0039] The RS485 communication circuit uses the SP3485EN chip, and the surge protection design of the RS485 communication circuit is designed according to the secondary protection level.

[0040] 5. RGB driving circuit

[0041] The RGB driver circuit contains multiple cascaded LEDs. To explain: when the LED color changes, the PWM signal is sent to the LED via the level conversion chip U6. The LED at this stage processes the received signal and sends it to the next LED.

[0042] The RGB driver circuit uses a TXS0101DCKR level converter to boost the MCU's 3.3V control signal to 5V, meeting the driving requirements of the LED beads and ensuring reliable signal transmission and normal LED lighting.

[0043] The LED chip circuit uses the W2812B built-in IC to cascade multiple LED chips for multi-layer color display. The microcontroller is configured to output a PWM wave via a 1.25µs timer. Combined with DMA, drive control can be performed without blocking the MCU's main task. The RGB primary color bit codes are output according to the 0 / 1 code cycle time and high / low level duration specified in the datasheet. Each color has a maximum value of 255 bits, controlling the RGB LED chips. Considering the microcontroller's 3.3V power supply and the cascading of multiple LED chips, a stable signal output to the LED chips is required. Therefore, a TXS0101DCKR level converter chip is used to convert 3.3V to 5V.

[0044] The RGB LED driving principle of this invention is as follows:

[0045] The WS2812B's driving principle is based on fine-grained timing control of digital signals. The color of each LED is defined by 24 bits of data, which are divided into three groups of 8 bits each, representing the brightness information of green, red, and blue respectively, following the order of the most significant bit first. In the control signal, each bit of data encoding includes 0 and 1 codes, as well as a RESET code used to distinguish data segments.

[0046] 0 code construction: The high level lasts for 0.2 to 0.28 microseconds, followed by a low level lasting for 1.55 to 1.72 microseconds.

[0047] 1-code construction: The high level time is relatively long, ranging from 0.65 to 0.9 microseconds, while the low level is also 1.10 microseconds.

[0048] Signal period: The duration of one full bit is approximately 1.72 microseconds.

[0049] RESET code: As an indicator of the end of a data packet or instruction, the low level of the RESET code lasts for a much longer duration than the data bits, typically in the range of 30 to 150 microseconds.

[0050] To ensure accurate transmission, the control circuit must generate a strictly timed pulse sequence that meets the aforementioned timing requirements. This encoded information is then serially transmitted to the WS2812B LEDs via a single wire (usually called a data line or DIN). After each LED parses the received 24-bit data, it illuminates the corresponding RGB colors based on the data content. The data is then automatically transmitted to the next LED (via the DO port), achieving cascaded control. This allows any number of WS2812B LEDs to be controlled with only one bus, greatly simplifying wiring and control complexity.

[0051] The principle behind this utility model's buzzer playing different tones is as follows:

[0052] The buzzer's sound frequency can be directly controlled by adjusting the PWM output frequency. In a microcontroller, timer parameters can be programmed to generate PWM signals of different frequencies. For example, a higher pitch is produced by setting a higher PWM frequency, and a lower pitch by setting a lower PWM frequency. Besides frequency, duty cycle is also an important parameter; changes in duty cycle do not directly affect pitch, but rather the intensity or volume of the sound.

[0053] Implementation method: In practical applications, the PWM function of the microcontroller is used. The corresponding timer module is configured through code to set the required frequency and duty cycle. Then, the PWM signal is connected to the input terminal of the buzzer to control the buzzer to make a sound.

[0054] The system of this utility model adopts the GD32F103C8T6:ARM-M3 core, with a total RAM capacity of 20KB, a total ROM capacity of 64KB, an external crystal oscillator of 8MHz, a system clock frequency of 72MHz (MAX: 108MHz), and the internal system buses (APB1 and APB2) are both 72MHz.

[0055] The communication part of this utility model adopts the Modbus communication ported FreeModbus slave protocol stack, with USART0 as the communication interface and TIM3-CH0 generating a 50us time base as the protocol stack heartbeat basis to maintain the communication timing.

[0056] The audio alarm of this invention is based on the AL90 alarm section. TIM2-CH0 outputs a PWM signal, and TIM0 interrupt is used to calculate the tone frequency in real time.

[0057] The RGB LED bead of this invention adopts TIM1-CH0, PWM+DMA driving method, generates a 1.25us time base signal, and controls the LED bead communication through pulse width modulation.

[0058] This utility model's embedded time-sharing multiplexing management system processes multiple tasks and events.

[0059] This invention uses on-chip FLASH to read and write some necessary audio-visual attributes.

[0060] The communication function of this invention conforms to the standard Modbus RTU format, while its analog mode conforms to a proprietary protocol format.

[0061] This invention has three modes: on / off mode, RGB mode, and analog mode. It can display 10 colors: red, green, blue, orange, purple, cyan, white, yellow, pink, and off.

[0062] This utility model has 10 brightness levels.

[0063] This invention features five frequencies: constant light, flashing (1Hz), flashing (2Hz), double flashing (1Hz), and breathing. It can also trigger an alarm via 32 different buzzers.

[0064] This invention enables liquid level display in analog mode. This invention also supports power-off data retention.

[0065] This utility model shall meet the following specifications:

[0066] 1) Input voltage 24V;

[0067] 2) The LED output is stable without abnormal flickering, etc.

[0068] 3) The buzzer plays normally without any abnormalities;

[0069] 4) The original functions will be retained after power is restored;

[0070] This utility model has the following features:

[0071] Flexible color interpretation: Users can configure parameters such as color and mode of the tower light through the industrial Modbus RTU protocol. The system provides 3 modes and 10 colors to meet the industrial signal display needs of different scenarios.

[0072] Diverse frequency adjustment: It has 5 built-in preset light frequency schemes, which can easily achieve whether it is a fast-response warning need or a delicate and slow gradient, providing users with a wide range of signal frequency choices.

[0073] Brightness adjustment: The system offers 10 levels of brightness selection and incorporates the HSV algorithm to ensure that adjusting the brightness does not cause distortion in hue or saturation.

[0074] Multiple audio alarms: The system has 32 built-in commonly used audio alarm sounds, designed to meet the diverse application needs of specific scenarios.

[0075] Modbus Protocol Interface: To facilitate integration into existing automated control systems, the tower light is equipped with a standard Modbus RTU protocol interface, which greatly reduces the learning time for users.

[0076] For the specific implementation scheme of this embodiment, please refer to the relevant descriptions in the above embodiments, which will not be repeated here.

[0077] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0078] It should be noted that in the description of this utility model, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means at least two.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] The programmable audible and visual alarm system of this invention employs a high-performance GD32F303CCT6 microprocessor, ensuring rapid system response and stable operation. This invention features enhanced power management design and multiple protection mechanisms to guarantee long-term stable operation. The efficient LED driver solution combined with audio amplification technology provides an exceptional audio-visual experience.

[0081] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A programmable audible and visual annunciator system, characterized by, The system comprises a power supply circuit, an MCU control circuit, an audio power amplifier circuit, an RS485 communication circuit and an RGB drive circuit, the output end of the power supply circuit is connected with the MCU control circuit, the audio power amplifier circuit, the RS485 communication circuit and the RGB drive circuit respectively, the output end of the MCU control circuit is connected with the audio power amplifier circuit and the RGB drive circuit respectively, the MCU control circuit is also connected with the RS485 communication circuit, and the RGB drive circuit comprises a plurality of cascaded LED lamp beads.

2. The programmable audible and visual annunciator system of claim 1, wherein, The power supply circuit comprises a first XL1509 power supply chip, a second XL1509 power supply chip and a voltage conversion chip LM117, the input end of the first XL1509 power supply chip is connected with a power supply input end, the input end of the second XL1509 power supply chip is connected with the output end of the first XL1509 power supply chip, and the input end of the voltage conversion chip LM117 is connected with the output end of the second XL1509 power supply chip.

3. The programmable audible and visual annunciator system of claim 2, wherein, The power supply circuit further comprises a seventh TVS tube D7 and a first Schottky diode D1, one end of the seventh TVS tube D7 is connected with the power supply input end, the other end is grounded, the anode of the first Schottky diode is connected with the power supply input end, and the cathode of the first Schottky diode is connected with the input end of the first XL1509 power supply chip.

4. The programmable audible and visual annunciator system of claim 1, wherein, The MCU control circuit comprises a single-chip microcomputer, the single-chip microcomputer comprises an audio signal output end, an RGB control signal output end and a communication protocol port, the audio signal output end is connected with the audio power amplifier circuit, the RGB control signal output end is connected with the RGB drive circuit, and the communication protocol port is connected with the RS485 communication circuit; and the single-chip microcomputer is a GD32F103C8T6 single-chip microcomputer.

5. The programmable audible and visual annunciator system of claim 1, wherein, The audio power amplifier circuit comprises a first triode Q1, a ninth Schottky diode D9 and a transformer, the base of the first triode Q1 is connected with the audio signal output end of the single-chip microcomputer of the MCU control circuit, the emitter of the first triode Q1 is grounded, the collector of the first triode Q1 is connected with the anode of the ninth Schottky diode D9, the cathode of the ninth Schottky diode D9 is connected with the power supply circuit, the port 1 of the transformer is connected with the collector of the first triode Q1, and the port 2 of the transformer is connected with the power supply circuit.

6. The programmable audible and visual annunciator system of claim 1, wherein, The RS485 communication circuit comprises a communication chip and a first TVS tube TV1, the input end of the communication chip is connected with the MCU control circuit, the communication chip is also connected with the power supply circuit, and the output end of the communication chip is connected with the first TVS tube TV1; and the communication chip is an SP3485EN chip.

7. The programmable audible and visual annunciator system of claim 1, wherein, The RGB drive circuit further comprises a level conversion chip U6, the input end of the level conversion chip U6 is connected with the MCU control circuit, the level conversion chip U6 is also connected with the power supply circuit, and the output end of the level conversion chip U6 is connected with the LED lamp bead.

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